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  2. Hydrant wrench - Wikipedia

    en.wikipedia.org/wiki/Hydrant_wrench

    Big tricoise wrenches are placed in fire trucks, and are mainly used to fasten the big hoses, e.g. ∅110 mm hoses to feed the pumper tank from the hydrant (∅100 mm for the clutch). Small tricoise are made of brass and hang at the fire belts; they are used to fasten the small hoses, e.g. , ∅70mm to ∅22mm hoses (∅65mm to ∅20mm clutches).

  3. Glossary of firefighting equipment - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_firefighting...

    Reducer Adapter used to attach a larger diameter source hose to a smaller diameter receiving hose. The female end has the larger threads, while the male end has the smaller threads. [16] Relief valve A valve set to open at a specified pressure so as to not exceed safe operating pressure in hoses or pumps. Rescue engine

  4. 22 mm grenade - Wikipedia

    en.wikipedia.org/wiki/22_mm_grenade

    A 22 mm grenade is launched on the spigot principle, like a spigot mortar; a tube slightly under 22 mm is attached to the end of a rifle barrel to serve as the spigot, and left open on the muzzle end so bullets can be fired through it. The grenade consists of a heavy warhead section of 30–75 mm (1.2–3.0 in) in diameter for the nose, and a ...

  5. Eccentric reducer - Wikipedia

    en.wikipedia.org/wiki/Eccentric_reducer

    Eccentric reducers are used at the suction side of pumps to ensure air does not accumulate in the pipe. The gradual accumulation of air in a concentric reducer could result in a large bubble that could eventually cause the pump to stall or cause cavitation when drawn into the pump. Eccentric reducers exhibit a unique design with one side having ...

  6. Piping and plumbing fitting - Wikipedia

    en.wikipedia.org/wiki/Piping_and_plumbing_fitting

    A reducer reduces the pipe size from a larger to a smaller bore (inner diameter). Alternatively, reducer may refer to any fitting which causes a change in pipe diameter. [15] This change may be intended to meet hydraulic flow requirements of the system or adapt to existing piping of a different size. The reduction length is usually equal to the ...

  7. Socket wrench - Wikipedia

    en.wikipedia.org/wiki/Socket_wrench

    Socket set with ratchet (above), four hex sockets and a universal joint. A socket wrench (or socket spanner) is a type of spanner (or wrench [1] in North American English) that uses a closed socket format, rather than a typical open wrench/spanner to turn a fastener, typically in the form of a nut or bolt.

  8. Torque wrench - Wikipedia

    en.wikipedia.org/wiki/Torque_wrench

    A click torque wrench. A torque wrench is a tool used to apply a specific torque to a fastener such as a nut, bolt, or lag screw.It is usually in the form of a socket wrench with an indicating scale, or an internal mechanism which will indicate (as by 'clicking', a specific movement of the tool handle in relation to the tool head) when a specified (adjustable) torque value has been reached ...

  9. Pipe wrench - Wikipedia

    en.wikipedia.org/wiki/Pipe_wrench

    A pipe wrench is any of several types of wrench that are designed to turn threaded pipe and pipe fittings for assembly (tightening) or disassembly (loosening). The Stillson wrench, or Stillson-pattern wrench, is the usual form of pipe wrench, especially in the US. The Stillson name is that of the original patent holder, who licensed the design ...